Design and fabrication of full-Heusler compound with positive Seebeck coefficient as a potential thermoelectric material

Hezhang Li; Kei Hayashi; Yuzuru Miyazaki

doi:10.1016/j.scriptamat.2018.03.018

Design and fabrication of full-Heusler compound with positive Seebeck coefficient as a potential thermoelectric material

Hezhang Li, Kei Hayashi^*, Yuzuru Miyazaki

^*Corresponding author for this work

Tohoku University

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

To explore full-Heusler compounds with positive Seebeck coefficient, we calculated thermoelectric (TE) properties of several Co- and Mn-based full-Heusler compounds. Relatively high Seebeck coefficients were obtained in the calculation, indicating a potential of full-Heusler compounds as TE materials. As a candidate, we prepared a Mn₂VAl sample and measured its TE properties. As predicted in the calculation, the Mn₂VAl sample exhibited a positive Seebeck coefficient from 315 K to 1020 K. The maximum power factor was 2.7 × 10⁻⁴ Wm⁻¹ K⁻² at 717 K. This study embodies great significance for future study on design and fabrication of full-Heusler compounds with high TE properties.

Original language	English
Pages (from-to)	130-133
Number of pages	4
Journal	Scripta Materialia
Volume	150
DOIs	https://doi.org/10.1016/j.scriptamat.2018.03.018
Publication status	Published - Jun 2018
Externally published	Yes

Keywords

Co-based full-Heusler compounds
First-principles density functional theory
Mn-based full-Heusler compounds
MnVAl
Thermoelectric properties

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10.1016/j.scriptamat.2018.03.018

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title = "Design and fabrication of full-Heusler compound with positive Seebeck coefficient as a potential thermoelectric material",

abstract = "To explore full-Heusler compounds with positive Seebeck coefficient, we calculated thermoelectric (TE) properties of several Co- and Mn-based full-Heusler compounds. Relatively high Seebeck coefficients were obtained in the calculation, indicating a potential of full-Heusler compounds as TE materials. As a candidate, we prepared a Mn2VAl sample and measured its TE properties. As predicted in the calculation, the Mn2VAl sample exhibited a positive Seebeck coefficient from 315 K to 1020 K. The maximum power factor was 2.7 × 10−4 Wm−1 K−2 at 717 K. This study embodies great significance for future study on design and fabrication of full-Heusler compounds with high TE properties.",

keywords = "Co-based full-Heusler compounds, First-principles density functional theory, Mn-based full-Heusler compounds, MnVAl, Thermoelectric properties",

author = "Hezhang Li and Kei Hayashi and Yuzuru Miyazaki",

note = "Publisher Copyright: {\textcopyright} 2018 Acta Materialia Inc.",

year = "2018",

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doi = "10.1016/j.scriptamat.2018.03.018",

language = "English",

volume = "150",

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journal = "Scripta Materialia",

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T1 - Design and fabrication of full-Heusler compound with positive Seebeck coefficient as a potential thermoelectric material

AU - Li, Hezhang

AU - Hayashi, Kei

AU - Miyazaki, Yuzuru

PY - 2018/6

Y1 - 2018/6

N2 - To explore full-Heusler compounds with positive Seebeck coefficient, we calculated thermoelectric (TE) properties of several Co- and Mn-based full-Heusler compounds. Relatively high Seebeck coefficients were obtained in the calculation, indicating a potential of full-Heusler compounds as TE materials. As a candidate, we prepared a Mn2VAl sample and measured its TE properties. As predicted in the calculation, the Mn2VAl sample exhibited a positive Seebeck coefficient from 315 K to 1020 K. The maximum power factor was 2.7 × 10−4 Wm−1 K−2 at 717 K. This study embodies great significance for future study on design and fabrication of full-Heusler compounds with high TE properties.

AB - To explore full-Heusler compounds with positive Seebeck coefficient, we calculated thermoelectric (TE) properties of several Co- and Mn-based full-Heusler compounds. Relatively high Seebeck coefficients were obtained in the calculation, indicating a potential of full-Heusler compounds as TE materials. As a candidate, we prepared a Mn2VAl sample and measured its TE properties. As predicted in the calculation, the Mn2VAl sample exhibited a positive Seebeck coefficient from 315 K to 1020 K. The maximum power factor was 2.7 × 10−4 Wm−1 K−2 at 717 K. This study embodies great significance for future study on design and fabrication of full-Heusler compounds with high TE properties.

KW - Co-based full-Heusler compounds

KW - First-principles density functional theory

KW - Mn-based full-Heusler compounds

KW - MnVAl

KW - Thermoelectric properties

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DO - 10.1016/j.scriptamat.2018.03.018

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JO - Scripta Materialia

JF - Scripta Materialia

ER -

Design and fabrication of full-Heusler compound with positive Seebeck coefficient as a potential thermoelectric material

Abstract

Keywords

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